Lakeville is a census-designated place (CDP) in Litchfield County, Connecticut, United States, close to Dutchess County, New York. It is within the town of Salisbury, but has its own ZIP Code (06039). As of the 2010 census, the population of Lakeville was 928, out of 3,741 in the whole town of Salisbury. The Hotchkiss School is located in Lakeville, and the Indian Mountain School is nearby.

Lakeville is in the southwest share of the town of Salisbury, on U.S. Route 44 1.5 miles (2.4 km) southwest of the Salisbury town center. US 44 leads northeast 8 miles (13 km) to Canaan village and west 4 miles (6 km) to Millerton, New York.

According to the U.S. Census Bureau, the Lakeville CDP has a total area of 3.7 square miles (9.6 km), of which 3.2 square miles (8.2 km²) are home and 0.54 square miles (1.4 km), or 14.8%, are water. Most of the water area is share of Lake Wononscopomuc, the deepest natural lake in the state.

Until 1846, Lakeville was called “Furnace Village”, due to the location there of one of the in front blast furnaces of the historic Salisbury iron industry (one of which was expected in the 1760s by future Revolutionary War hero Ethan Allen. Benjamin B. Hotchkiss, inventor of the Hotchkiss gun was born in comprehensible Watertown. A boarding studious in his name, the Hotchkiss School, was founded by his widow Maria Bissell Hotchkiss in Lakeville in 1891. It highly developed became coeducational. The Indian Mountain School, a boarding school for students Pre-K through 9th, is south of the Lakeville CDP. It was founded in 1922.